unreality vs falsity

unreality and falsity both are nouns.

Word	Noun	Adjective	Verb	Adverb
unreality	Yes	No	No	No
falsity	Yes	No	No	No

As nouns, falsity is a hyponym of unreality; that is, falsity is a word with a more specific, narrower meaning than unreality:

unreality: the state of being insubstantial or imaginary; not existing objectively or in fact
falsity: the state of being false or untrue

Other hyponyms of unreality include cloud, falseness.

unreality (noun)	falsity (noun)
the quality possessed by something that is unreal	a false statement
ineptitude in dealing with reality.	the state of being false or untrue
the state of being insubstantial or imaginary; not existing objectively or in fact